"Let there be no compulsion in religion. Truth stands out clear from error; whoever rejects evil and believes in God has grasped the most trustworthy hand-hold that never breaks. And God hears and knows all things." - (The Qur’an, Al-Baqarah, 2: 256)
"Every soul is held in pledge for its deeds." - (The Qur'an, Al-Muddathir, 74:38)
God’s Messenger (peace be upon him) was asked what type of earning was best and replied, ”A man’s work with his hand and every business transaction which is approved." Rafi‘ ibn Khadij, Mishkat al Masabih, hadith no. 2783.
"Woe to those who give short measure, who demand of other people full measure for themselves, but give less than they should when it is they who weigh or measure for others! Do these people not realize that they will be raised up on a mighty Day, a Day when everyone will stand before the Lord of the Worlds? " (The Qur'an, Al-Mutaffifin, 83:1-4)
"O you who believe! Fulfill your obligations" (The Qur'an, Al-Ma'idah, 5:1)
"If the debtor is in difficulty, then delay things until matters become easier for him; still, if you were to write it off as an act of charity, that would be better for you if you only knew."(The Qur'an, Al-Baqara, 2: 280)
On the Day of Judgment, the Prophet (saaw) will be a witness against “one who employs a laborer and gets the full work done by him, but does not pay him his wages." Abu Hurayrah, Sahih al Bukhari, hadith no. 3.430.
"O you who believe! Give of the good things which you have (honorably) earned. And of the fruits of the earth which We have produced for you, and do not even aim at getting anything which is bad, in order that out of it you may give away something, when you yourselves would not receive it except with closed eyes.(The Qur'an, Al-Baqarah, 2: 267)
"He who buys the stolen property, with the knowledge that it was stolen, shares in the sin and shame of stealing.“ Prophet Muhammad (s) in a hadith reported by al Bayhaqi and cited in al Qaradawi.
"God commands you [people] to return things entrusted to you to their rightful owners, and if you judge between people, to do so with justice." (The Qur'an, An-Nisa, 4:58)
"And spend of your substance in the cause of God. And make not your own hands contribute to (your) destruction; But do good; for God loves those who do good."(The Qur'an, Al-Baqarah, 2: 195)
"None of you truly believes until he wishes for his brother what he wishes for himself "(Hadith #13 in An Nawawi and related by Bukhari and Muslim)